Specification: Replaces the original Wi Remote and Wii MotionPlus accessory. This controller combines the advanced motion-sensing features of Wi MotionPlus with the Wi Remote comfortable to hold Built-in motion sensor and communicates wirelessly with the Sensor Bar for unprecedented precision and ease of use Rumble feature and a built-in speaker High Quality Anti Skid Silicone Case included to protect the Wi controller from dirt, shock and damage Cutouts for ports, sensor, buttons and speaker on the silicone skin case Wrist Strip included for safe when use Compatible with any version of Nintendo Wi console Dimensions: Standard size Power: AA 1.5V battery x 2 (Not included) Color of silicone case: Transparent Length of Wrist Strip: Approx. 22cm use manual: for New wii controller should be consistent with the wii host then can play games. The method is simple: for open the wii battery cover, there is a red twist,for open the wii SD card slot, there is also a red button. first You need to press the red button on the wii host, then press the handle button inside the battery button to synchronize the handle, the controller just a light ,it proves ok now. You can play the game properly. Package Include: Wi Remote built in motion plus 1x Nunchuck 1x Silicone Case